Helical connecter



Patented Mar. 14, 1933 PATENT OFFICE WILLIAM A. HOLT, F MEBANENORTBCAROLINA HELIGAL CONNECTER Application led October 5, 1929. Serial No.397,610.

The present invention relates to bed springs of the type wherein aplurality of vertical coils comprise the bed bottom. More particularlythe invention pertains to the helical connecters employed in this typeof bed springs. Ordinarily, in assembling the bed bottom, the helicalsare attached to the vertical coils by bending the ends of the c helicalsover the top windings of the coils i0 or by providing hooked ends on thehelical connecter. In the latter type of connecter, it is necessary toimpart a twist or quarterturn to the helical in order that properengagement with the vertical coils be established and maintained.

The present connecter consists essentially of a helical spring having apreformet hooked end which is capable of engaging the vertical coilswithout being twisted and 29 which is provided with a humped portiondesigned to prevent disengagement of the arts.

p rThe invention will be more fully understood from the followingdescription taken V with the drawing in which is illustrated a preferredform of the connecter and in which,-

Fig. 1 is a top View of two vertical coils and a helical connecter, theends of which engage the coils;

Fig. 2 is an enlarged side view of the helical connecter, portionsthereof being broken; and

F ig. 3 is a perspective view of one end of the connecter.

Referring to the drawing, the connecter 11 is a helical wire spring suchas is usually employed to bridge the distance between adjacent verticalcoils 12. Each end of the 49 connecter is bent to form a hook to engagethe top winding 13 of the coil 12. The

hook is formed by bending the wire to first provide a straight shankportion 14 substantially parallel to the axis of the helix and thencurving the shank to form a reversely curved resilient tongue 15. Theend or nose 16 of the tongue is bent away from the helix,

thus providing a hump 17 which is spaced from the helix a distance lessthan the dia-meter of the coil wire and serves to resist dis- OSIengagement of the connecter from the coil. lIhe outwardly directed nosealso facilitates engagement of the connecter and coil.

It will be apparent that the described form of hook permits engagementof the connecter and coil by a rectilinear movement of the connecterend. This'eliminates the additional operation of twisting the spring asis necessary in ordinary hooked ends and thus results in a saving oflabor. It will also be obvious that the hump on the hook tongue, beingspaced from the endmost winding of the helix a distance slightly lessthan the thickness of the wire in the vertical coil, prevents theconnecter from being accidentally displaced with respect to the coil.

TvVhat is claimed is 1. In a bed bottom, a plurality of vertical wirecoils, and a helical spring, said spring having a hooked portion at eachend thereof for engaging said coils, each of said hooked portionscomprising a reversely bent tongue and a hump adjacent the end of thetongue, said tongue lying wholly within the projected diameter oil saidconnecter, said hump being spaced a distance less than the diameter ofthe coil wire from and axially with respect to the endmost turn of saidspring.

2. A connecter for bed bottoms comprising a helical spring portion, anda hook formed at each end of said portion, said hook termi nating in anose directed outwardly and away from said spring portion to form a humpon the hook, said hook and noselying wholly within the projecteddiameter of the connecter.

In testimony whereof I have signed my name to this speciication.

' WILLIAM A. HOLT.

